Loom-shuttle



J. P. TIRRELL.

LOOM SHUTTLE.

(No Model.)

No. 351,225. Patented Oct. 19, 1886.

.spindle to close together to permit the cop to NrTE STATES PATENTFFICE.

JACOB P. TIRRELL, OF CHELSEA, ASSIGNOR TO AMOS B. TAYLOR AND GEORGE F.PINKHAM, OF \VOLLASTON, MASSACHUSETTS.

LOOM-SHUTTLE.

SPEC IFICATION forming part of Letters Patent No 351,225, dated October19, 1886 Application filed February 10, 1886.

To all whom it may concern.-

Beitknown that I, Jaoon P. TIRRELL, acitizen of the United States,residing at Chelsea, in the county of Suffolk and State ofMassachusetts, have invented certain Improvements in Loom-Shuttles, ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying drawings, making part of thisspecification, in which Figure 1 is a central vertical section through aportion of a shuttle constructed in accordance with my invention. Fig. 2is a horizontal section through the same, on the line :0 x of Fig. 1,with the cop in place upon the expanded spindle. Fig. 3 is a centralvertical sectionof the shuttle with the spindle raised. Fig. 4; is atransverse vertical section on the line 3 g of Fig. 1. Fig. 5 is asection on the line :4 z of Fig. 8, showing the cop in place upon thespindle before the latter has been expanded.

My invention relates to that class of loomshuttles which are providedwith split spindles adapted to be expanded when closed down into theshuttle to hold the cop firmly in place; and my invention consists inthe combination, with the shuttle li ody and a split spindle pivotedtherein, of a rocking pivoted wedge extending around, beneath, and infront of the heel of the same and vertically upward through the split ofthe said spindle, above which it is preferably provided with a lip orprojection, which prevents the wedge from dropping down out of the splitas the spindle is raised on its pivot out of the shuttle, the relativepositions of the pivots of the spindle and wedge being such that as thespindle is raised that portion of the wedge within the split will bedrawn back toward the heel of the spindle into an enlarged or recessedportion of the split, thus allowing the two portions of the bev easilyslipped thereon, while when the spindle is closed down into the shuttlethe wedge will be forced forward in the direction of the length of thespindle into the narrow portion of the split, and thus caused to expandthe spindle to hold the cop firmly in place, as hereinafter moreparticularly set orth.

In the said drawings, A represents the shut Serial No. 191,5l3. (Nomodel.)

tle-body, of the usual form, within a cavity or k recess, a, at one endof which is pivoted, at b, the spindle B, upon the top of theheel orbase a of which bears the ordinary fiat spring, (I. The spindle 15 issplit lengthwise from near the point entirely through the heel, and whenraised out of the cop-chamber c of the shuttle its two parts, fg, areintended to lie nearly in Contact with each other, as seen in Fig. 5, toallow of the cop G being easily slipped thereon or the cop-tube to beremoved therefrom.

\Vithin a central slit in the under side of the shuttle-body A, beneathand in the rear of the pivot b of the spindle B, is pivoted, at 1?, inline with the axis of the spindle, a wedge-plate, D, of the form seen inFigs. 1 and 3, which fits within the central split of the heelcofthespindle and extends around in front ofthe said heel and upward throughthe split it, between the two portions f 5 above which it is providedwith a turned-over lip or other suitable projection or enlargement, m,as seen in Fig. 4, the purpose of which is to prevent the wedge fromdropping or working down out of the split k as the spindle is raised onits pivot out of the shuttle. That portion, a, of the split kimmediately in front of the heel c is slightly enlarged or recessed out,as seen in Figs. 2 and 5, its front end being preferably inclined oneach side at 10 toward the narrower portion of the split, and the pivotsb i of the spindle and wedge are so placed with respect to each otherthat the said spindle and wedge will rock in arcs of circles eccentricto each other, and thus when the spindle is raised that portion of thewedge D which lies within the split will be drawn backward toward theheel 0 into the enlarged or recessed portion a, which thus allows thetwo portiousf g of the spindle to come close together, as seen in Fig.5, to permit the cop G to be easily placed thereover.

Then the spindle is closed down into the shuttle, the wedge D is rockeddownwardly on its pivot t by the friction of the two portions f g, whichpinch it tightly between them, and as it descends in the arc of a circleeccentric to that in which the spindle moves, it is forced forwardtoward the point of the spindle,against the inclines 10, and into thenarrower portion of the split k in front of the same, as seen in Fig. 2,thus separating the two parts f g and.

shuttle, and be withdrawn entirely from the.

said split when the spindle is raised, the operation of expanding thespindle is facilitated and accomplished with less power on account ofthe increased leverage produced by pivoting the wedge in the mannerdescribed,which insures the spindle being carried by the action of itsspring (Z fully down to its horizontal position in the cop-chamber c, asrequired.

I claiml. The combination, with ashuttle-body and a split spindle,pivoted therein, of a wedge, D,

pivoted on a stationary pin, 13, and rocking in an arc of a circleeccentric to that in which the spindle moves, and extending around infront of the heel of the spindle, and having a verti cal portionextending up through the split of the spindle in a direction at rightangles to its length, and adapted to remain permanently within saidsplit and be moved-backward and forward therein in the direction of thelength of the spindle as it is rocked on its pivot-pin 1, whereby thespindle is expanded as it is closed down into the shuttle and contractedas it is raised out of the same, substantially as set forth.

2. The combination, with the shuttle-bodyA and its pivoted split spindleB, of the rocking pivoted wedge D, extending around, in front of theheel of the spindle and upward through the split 70, and adapted toremain permanently within said split and be moved backward and forwardtherein in the direction of the length of the spindle as it is rocked onits pivot, and having a lip or projection, m, on that portion whichextends above the spindle, whereby the wedge is prevented from droppingor working down out of the split as the spindle is raised on its pivotout of the shuttle, substantially as described.

3. The combination, with the shuttle-body A, of the pivoted spindle B,having asplit, k, provided with an enlarged or recessed portion, a, andthe wedge D, pivoted on a stationary pin, t, and rocking in the arc of acircle eccentric tothat in which the spindle moves, andextending aroundin front of the heel of the spindle,and having a vertical portionextending up through the split of the spindle in a direction at rightangles to its length, and adapted to remain permanently within saidsplit and be moved backward into the said enlarged or recessed portionnof thesame as the spindle is raised out of the shuttle, substantiallyas and for the purpose set forth.

\Vitness my hand this 30th day of J annary,

JACOB P. TIRRELL.

In presence of- P. E. TESCHEMAOHER, W. J. CAMBRIDGE.

